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首页> 外文期刊>Journal of industrial and engineering chemistry >A study of species formation of aqueous tertiary and hindered amines using quantitative ~(13)C NMR spectroscopy
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A study of species formation of aqueous tertiary and hindered amines using quantitative ~(13)C NMR spectroscopy

机译:定量〜(13)C NMR光谱研究水性叔胺和受阻胺的物种形成

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Tertiary and sterically hindered amines have been chosen as potential candidate absorbents, recommended for their high carbon dioxide (CO2) loading capacity and easy regeneration. In this study, the CO2 absorption characteristics of these amines were studied using ~1H nuclear magnetic resonance (NMR) and quantitative ~(13)C NMR. The equilibrium experiments were conducted in the vapor-liquid equilibrium (VLE) apparatus, which was used to measure the CO2 absorption capacities and relative absorption rates of aqueous solutions of methyldiethanolamine (MDEA), 2-amino-2-methyl-l-propanol (AMP). The CO2 loaded absorbents were used for NMR measurement to determine the distribution of species formed in the absorbents. This process confirmed the reaction mechanisms of the individual absorbents in relation to CO2 absorption capacities.
机译:叔胺和位阻胺已被选作潜在的候选吸收剂,因其高二氧化碳(CO2)负载量和易于再生而被推荐。在这项研究中,使用〜1H核磁共振(NMR)和〜(13)C NMR定量研究了这些胺的CO2吸收特性。在气液平衡(VLE)装置中进行了平衡实验,该装置用于测量甲基二乙醇胺(MDEA),2-氨基-2-甲基-1-丙醇( AMP)。装有CO2的吸收剂用于NMR测量,以确定吸收剂中形成的物质分布。该过程证实了各个吸收剂相对于CO 2吸收能力的反应机理。

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